Internal-combustion engine



Jan. 14, 1930* A. M. NIVEN 1,743,282

INTERNAL COMBUSTI ON ENGINE 9 0 Q O O Filed Jan. 14, 1928 2 Sheets-Sheet1 v'z 55 A K. v O:@ Q::@ O

' A TTORNEY.

Jan. 14, 1930. A. M. NIVEN INTERNAL COMBUSTION ENGINE "2 Sheets-SheetFiled -Jan. 14, 1928 INVENTbR.

ATTORNEY Patented Jan. 14, 1930 FATENT FFl-CEI H ARCHIE MACPI-IAILNIVEN', OF DETROIT, MICHIGAN, ASSIGNOR TO CONTINENTAL MOTORSGORPORATION,OFDETBOII, MICHIGAN, A CORPORATION OF VIRGINIA INTERNAL-COMBUSTIONENGINE Application filed January. it, 1928. Serial No. 246,665.

This-invention relates to internal combustion engines and refersmorepartlcularly to improved means for-the distribution and circulation ofthecooling medium such as water.

My invention isprimarily adapted for use in sleeve valve or like enginesbut may also be used to advantage in other types of engines- It isdesirable especially in sleeve valve engines andthe liketo provide-aflow of the cooling wateror other cooling medium in the cylinder wateracket upwardly mainly along 7 one side of the engine such as the exhaustside and thence to the cylinder heads and outlet header or tootherpoints in the system.

One object of. my invention resides in the provision of a cylinder blockor engine body constructed to distribute the circulating water wherebythe engine. cylinders are substa-ntially equally cooled. A furtherobject of my invention resides in a-novel means for efficiently cooling,the engine with particular reference to the'exhaust side which tends toreach a-considerably higher temperature than 3 erably at the cylinderexhaust ports so that the passages nearest the water pump are.

smaller than. the passages remote from the pump where the water supplyis ordinarily less, Iam enabled to'efficiently distribute thecirculating water substantially equalizing the cooling effect for thevarious cylinders. My-

construction is .of' a simple nature capable of being manufactured atno. greater costthan conventional'cylinder blocks.

Further objects of my invention reside in the combination andarrangement of parts as hereinafter described and claimed.

In the drawings in which like reference characters indicate Icorresponding parts,

of Fig. 3 a10ng55 Referring to the drawings reference character Arepresents the cylinder block castng or engine frame portion havingaplurallty of cylinders 10'and suitable intake ports 11 and exhaustports. 12' adopted to be controlled. in a well known manner by one ormore sleeve-valves (not shown) generally located within the cylinders.The particular type and construction of the sleeve valve or valves formsno part. of this invention.

The cylinderblock A is formed with a j acket 18 permitting circulationof cooling water around the-cylinders 10. Extending transversely of thecylinder block are spaced walls 14 and 15 respectively forming the floorand ceiling of the intakechambers 16 and the ex haust chambers 17, thesechambers being respectively in communication with the cylin der ports 11and 12 and being respectlvely open at 18 and. 19' for communicationwith. suitable intake and exhaust manifolds (not shown).

Located at some convenient point is awater pump 20 havin a water inlet21 and an outlet 22. tothe jacket 13 preferably below the lower wall 14.Cooling water from the pump 20 circulates longitudinally of the enginecooling the cylinders 10.- The cylinder block A is-provided withopenings'23 communicating with the acket 13 affording an outlet for thewater which thereafter may be conduct-' ed through the usual cylinderheads (not shown) and thence tothe usual header 24 usually extendinglongitudinally along the intake side of the engine -to the cooling.radiiator.

Along the exhaust side of the engine I have providedlongitudinallyspaced passages 25' m" eeresthrough the walls 1.4; 15', these passagesaffording passage of cooling water from the lower portion of the jacket13 to the cylinder block outlets 23. By varying the size of thepassages, the cooling water may be caused to be efficiently circulatedalong each cylinder and to be efliciently distributed to the outlets 23and thence to the cylinder heads (not shown). Thus from Figs. 2, 8, and3 it will be noted that the passages 25 nearest the pump 20 are smallerthan the passages more remote from the pump where the water supply isordinarily less, resulting in an efiicient distribution substantiallyequalizing the cooling effect for the various cylinders. My inventionthus provides means for restricting the flow of cooling water for thecylinder or cylinders nearest the source of supply of the cooling water.For illustration I have shown the passages 25 substantiallyprogressively increasing in effective'cross-sectional area according totheir remoteness from the pump, although in actual practice thevariation need not be so marked as will be readily understood. 7

The intake side of the engine may also be provided with openings 25principally to provide a relatively small quantity of water to circulateupwardly of the jacket 13 on the intake side to prevent formation ofsteam pockets. The greater quantity of water is preferably circulatedfrom jacket 13 through outlets 23 along the exhaust side of the enginewhere greater cooling is required. From the openings 23 along theexhaust side of the engine the water passes transversely of the cylinderheads (not shown) to the header 24 as will readily be understood.

lVhere the water pump is located intermediate the ends of the cylinderblock appropriate adjustment may be made in the relative sizes of thepassages 25 for the cylinders in proximity to the pump and for thecylinders remote from the pump as will be readily understood.

' By'restricting the passage of the cooling water or other coolingmedium within the cylinder block jacket, the upper face of the cylinderblock may be provided with relatively large openings 23 along eachlongitudinal side of the cylinder block facilitating in the.

coring operations of the cylinder block as will be readily understood.

What I claim as my invention is:

1. An internal combustion engine-ofthe sleeve valve type comprisingincombination a cylinder block having a plurality of water jacketedengine cylinders, a pump circulating the cooling water in said waterjacket, water outlet means for conducting water from the water jacket,cylinder block chambers positioned across the path of the watercirculating fromthe pump to the said water outlet means, passagesthrough said chambers affording passage for the cooling water duringtravel thereof from the pump to the water outlet means, said passagesbeing constructed and arranged to substantially equalize the coolingeffect for the cylinders.

2. An internal combustion engine of the sleeve valve type comprising acylinder block composed of a plurality of jacketed engine cylinders,intake and exhaust gas conduits for the cylinders respectively arrangedon oppov site sides of the cylinder block, a pump for circulatingcooling fluid through the cylinder jacket, cylinder block outlet meansfor the cylinder jacket cooling fluid, and cooling fluid circulatingmeans proportioned with respect to proximity to the pump for regulatingthe cooling effect of the cylinders along the exhaust side ofthecylinder block.

3. An internal combustion engine of the sleeve valve type comprising acylinder block composed of a plurality of jacketed engine cylinders,intake and exhaust gas conduits for the cylinders respectively arrangedon opposite sides of the cylinder block, a pump for circulating coolingfluid through the cylinder jacket, cylinder block outlet means for thecylinder jacket cooling fluid, and'aplurality of passages through whichthe cooling fluid passes from the pump to the cylinder f the of passagesthrough which the cooling fluid passes from the pump to the cylinderblock outlet means, said passages being spaced longitudinally of thecylinder block along the exhaust side thereof, the passages relativelyremote from the pump having greater fluid conducting capacity than thepassages, in proximity to the pump.

5. An internal combustion engine of the sleeve type comprising acylinder block composed of a plurality of jacketed engine cylinders,intake and exhaust gas conduits for the cylinders respectively arrangedon opposite sides of the cylinder block, a pump for circulating coolingfluid through the cylinder jacket, cylinder block outlet means'for thecylinder jacket cooling fluid, and a plurality of passages through whichthe cooling fluid passes from the pump to the cylinder block outletmeans, said passages being spaced longitudinally of the cylinder blockalong the exhaust side thereof, the passages relatively remote from thepump having greater crosssectional area than the passages in proximityto the pump. 1

6. An internal combustion engine comprising in combination a pluralityof engine cylinders, cooling fluid jacketing means for the cylinders,cooling fluid inlet and outlet means for the j acketing means, cylindercommunicating chambers within the cylinder block, and means associatedwith said chambers interposed in the jacketing means intermediate theinlet and outlet means for substantially equalizing the cooling effectfor the cylinders.

7. An internal combustion engine comprising in combination a pluralityof engine cylinders, cooling fluid jacketing means for the cylinders,cooling fluid inlet and outlet means for the jaeketing means, and meansinterposed in the jacketing means intermediate the inlet and outletmeans for causing the greater portion of the cooling fluid to flowupwardly of the cylinders along one side of the engine in substantiallyequal quantities longitudinally of the engine.

8. An internal combustion engine comprising in combination a waterjacketed cylinder I block having a plurality of engine cylinders,

a pump supplying water to said jacket, water outlet means for thecylinder block, a wall transversely of the cylinder block in the path ofthe water circulating from the pump to the cylinder block outlet means,said wall provided with water passages graduated with respect to theirproximity to the pump.

9. An internal combustion engine comprising in combination a waterjacketed cylinder block having a plurality of engine cylinders, a pumpsupplying water to said jacket, water outlet means for the cylinderblock, a wall transversely of the cylinder block in the path of thewater circulating from the pump to the cylinder block outlet means, saidwall provided with water passages spaced longitudinally of the cylinderblock, the effective cross-sectional areas of the passages being lessfor those passages near the pump than for those passages remote from thepump.

10. In an internal combustion engine comprising in combination a waterjacketed cylinder block having a plurality of engine cylinders, a pumpsupplying water to said jacket, water outlet means for the cylinderblock, a wall transversely of the cylinder block in the path of thewater circulating from the pump to the cylinder block outlet means, saidwall provided with water passages spaced longitudinally along oppositesides of the cylinder block, the accumulated effective crosssectionalareas of the passages along one side of the cylinder block being muchsmaller than the accumulated effective crosssectional areas of thepassages along the other side of the cylinder block.

11. An internal combustion engine comprising in combination a waterjacketed cylinder block having a plurality of engine cylinders, a pumpsupplying water to said jacket,

water outlet means for the cylinder block, a wall transversely of thecylinder block in the path of the water circulating from the pump to thecylinder block outlet means, said wall provided with water passagesspaced longitudinally along opposite sides of the cylinder block, theaccumulated effective crosssectional areas of the passages along oneside of the cylinder block being much smaller than the accumulatedeffective cross-sectional areas of the passages along the other side ofmeans for the jacket, and means in the cylinder block jacket below thesaid upper face for distributing the cooling water prior to passagethereof to the said outlets, said distributing means restricting thecooling water flow in the vicinity of the acket inlet means with respectto the cooling water flow in portions of the cylinder jacket remote fromthe jacket inlet means.

'13. An internal combustion engine of the sleeve valve type comprisingin combination a cylinder block having a plurality of water jacketedcylinders, a pump located at one end of the cylinder block for supplyingwater to the acket, water outlet means for the cylinder block, and aplurality of jacket passages below the water outlet means graduated withrespect to their proximity to the pump, said passages being spacedlongitudinally of the cylinder block for conducting water from the pumpto the cylinder black water outlet means.

14. An internal combustion engine of the sleeve valve type comprising incombination a cylinder block having a plurality of water jacketedcylinders, a pump located at one end of the cylinder block for supplyingwater to the jacket, water outlet means for the cylinder block, and aplurality of jacket passages below the water outlet means graduated withrespect to their proximity to the pump, said passages being spacedlongitudinally of the cylinder block for conducting water from the pumpto the cylinder block water outlet 1 means, the passages substantiallyprogres-' sively increasing in eflective cross-sectional area toward theend of the cylinder block remote from the pump.

In witness whereof, I hereunto subscribe my name this 7th day ofJanuary, A. D. 1928.

ARCHIE MAOPHAIL NIVEN.

